Data as of Oct 28, 2026.
DFIP vs SPIP: Differences, Returns & Fees
DFIP's duration was 6.3 years on Jul 31, 2026 and SPIP's 6.7 on Jun 30, 2026; DFIP charges 0.11% to SPIP's 0.12%.
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Net assets: $1.1bn on Jul 31, 2026 for Dimensional Inflation-Protected Securities ETF, and $1.1bn on Oct 27, 2026 for State Street SPDR Portfolio TIPS ETF.
Pair scorecard
DFIP costs 0.01 points a year less; their one-year returns differ by 0.2 points.
| Measure | DFIP | SPIP |
|---|---|---|
| Return | ||
| Total return, 1 year | −1.2% | −1.0% |
| Benchmark | ||
| What it tracks | No index, actively managed | Bloomberg U.S. Government Inflation-Linked Bond Index |
| Cost and size | ||
| Expense ratio | 0.11% | 0.12% |
| Net assets, DFIP as of Jul 31, 2026 and SPIP as of Oct 27, 2026 | $1.1bn | $1.1bn |
| Holdings | ||
| Holdings in common | 38% | |
Holdings in common uses holdings dated Jun 30, 2026 and Jul 31, 2026. Method
Risk and return
Nov 26, 2021 to Oct 23, 2026 · 256 weekly returns · each against AGGDFIP returned more: −0.1% to −1.7%. SPIP swung slightly less: 5.8% to 6.1%. DFIP fell slightly less at its worst: −14.3% to −14.9%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | DFIP | SPIP | AGG | Edge | How it is measured |
|---|---|---|---|---|---|
| Return | |||||
| Total return | −0.1% | −1.7% | DFIP | Price change plus distributions, reinvested. | |
| Annualized | 0.0% | −0.3% | DFIP | Total return as a yearly rate. | |
| Price return | −19.9% | −21.4% | DFIP (slight) | Price change alone, distributions left out. | |
| Risk | |||||
| Volatility | 6.1% | 5.8% | SPIP (slight) | Spread of weekly returns, annualized. Lower is steadier. | |
| Downside deviation | 4.6% | 4.5% | SPIP (slight) | Like volatility, counting only weeks below the Treasury bill rate. | |
| Max drawdown | −14.3% | −14.9% | DFIP (slight) | Deepest fall from a high to the low after it. | |
| Upside capture | 80.8% | 75.6% | 100.0% | DFIP (slight) | Share of its benchmark's rise caught in the weeks it rose. |
| Downside capture | 84.0% | 81.6% | 100.0% | SPIP (slight) | Share of its benchmark's fall taken in the weeks it fell. Lower is better. |
| Beta | 0.83 | 0.79 | 1.00 | SPIP lower | How far it moves for each 1% its benchmark moves. |
| R squared | 0.66 | 0.63 | 1.00 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | |||||
| Sharpe | −0.63 | −0.71 | DFIP | Return above Treasury bills per unit of volatility. | |
| Sortino | −0.83 | −0.93 | DFIP | Return above Treasury bills per unit of downside deviation. | |
| Treynor | −0.046 | −0.053 | −0.041 | DFIP | Return above Treasury bills per unit of beta. |
| Calmar | 0.00 | −0.02 | DFIP | Annualized return divided by the max drawdown. | |
| Against the benchmark | |||||
| Benchmark | AGG | AGG | AGG | The ETF each fund is measured against. | |
| Alpha | −0.4% a year | −0.9% a year | 0.0% | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | −0.26 | −0.58 | Not an edge | How sure the alpha is. Below 2, it could be chance. | |
| Alpha range | −3.6% to +2.8% | −4.1% to +2.2% | Both include zero | The 95% range for the yearly alpha. | |
| Information ratio | 0.07 | −0.02 | DFIP | Return against its benchmark per unit of tracking error. | |
| Tracking error | 3.7% | 3.8% | 0.0% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 256 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, DFIP and SPIP hold 38% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Jul 31, 2026.
half
38% in common
Only in one fund ↓
Side by side
DFIP and SPIP on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
DFIP and SPIP are built for the same job. How do they differ in cost, holdings and results?
- What each follows. DFIP follows No index, actively managed and SPIP follows Bloomberg U.S. Government Inflation-Linked Bond Index.
- Holdings in common. 38% of the weight is in the same securities (holdings dated Jul 31, 2026 and Jun 30, 2026).
- One-year total return (similar). Over 1 year to Oct 28, 2026 DFIP returned −1.2% and SPIP −1.0% with distributions reinvested, a gap of 0.2 points.
Data as of Oct 28, 2026.
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DFIP
DFIP is actively managed and tracks no index. Over the year to Oct 28, 2026 it returned −1.2% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.11% a year.
SPIP
SPIP tracks an index. Over the year to Oct 28, 2026 it returned −1.0% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.12% a year.
Questions people ask
- Which returned more over the last year, DFIP or SPIP?
- In the year to Oct 28, 2026, with distributions reinvested, DFIP returned −1.2% and SPIP −1.0%.
- Which is cheaper, DFIP or SPIP?
- DFIP is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, DFIP against SPIP, data as of Oct 28, 2026. https://etfiq.com/compare/any/dfip-vs-spip
ETFIQ. (Oct 28, 2026). DFIP against SPIP. Retrieved from https://etfiq.com/compare/any/dfip-vs-spip
[DFIP against SPIP (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/dfip-vs-spip)
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